public void SubFieldCollection_InsertItem1()
        {
            SubFieldCollection collection = _GetCollection();

            Assert.AreEqual(3, collection.Count);
            SubField subField = new SubField('d', "Subfield D");

            collection.Insert(1, subField);
            Assert.AreEqual(subField, collection[1]);
            Assert.AreEqual(4, collection.Count);
        }
        public void SubFieldCollection_InsertItem_Exception()
        {
            SubFieldCollection collection = _GetCollection();

            collection.Insert(1, null);
        }